Use centralized cmake version

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit ea94f155f4)

CMakeLists.txt

@@ -9,7 +9,12 @@
 #
 #################################################
 
-cmake_minimum_required( VERSION 3.5 )
+
+##### set project version ########################
+
+include( TDEVersion )
+cmake_minimum_required( VERSION ${TDE_CMAKE_MINIMUM_VERSION} )
+tde_set_project_version( )
 
 
 ##### general package setup #####################
@@ -27,11 +32,6 @@ include( FindPkgConfig ) # required for find_package( TDE )
 include( TDEMacros )
 
 
-##### set version number ########################
-
-tde_set_project_version( )
-
-
 ##### find required stuff #######################
 
 find_package( TDE )